keyword
MENU ▼
Read by QxMD icon Read
search

Pituitary adenoma

keyword
https://www.readbyqxmd.com/read/28432860/high-ki-67-expression-is-associated-with-prolactin-secreting-pituitary-adenomas
#1
Bogdan Bălinişteanu, Anca Maria Cîmpean, Amalia Raluca Ceauşu, Ana Silvia Corlan, Eugen Melnic, Marius Raica
Pituitary adenomas represent the third most common primary intracranial tumor in neurosurgical practice. To understand the biological behaviour of the pituitary adenomas previous studies have determined the tumor proliferation rate using monoclonal antibodies targeted against the Ki-67 antigen. The aim of this study was to correlate the Ki-67 index with hormonal profiles of pituitary adenomas. The study included 50 pituitary adenoma cases. For histopathologic evaluation, the sections were stained with routine hematoxylin and eosin method...
April 22, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28432562/increased-expression-of-the-microrna-106b-25-cluster-and-its-host-gene-mcm7-in-corticotroph-pituitary-adenomas-is-associated-with-tumor-invasion-and-crooke-s-cell-morphology
#2
Filip Garbicz, Dawid Mehlich, Beata Rak, Emir Sajjad, Maria Maksymowicz, Wiktor Paskal, Grzegorz Zieliński, Paweł K Włodarski
PURPOSE: MCM7 (minichromosome maintenance complex component 7), a DNA replication licensing factor, is a host gene for the oncogenic miR-106b~25 cluster. It has been recently revealed as a relevant prognostic biomarker in a variety of cancers, including pituitary adenomas. The purpose of this study was to assess whether miR-106b~25 and MCM7 levels correlate with tumor invasiveness in a cohort of ACTH-immunopositive adenomas. METHODS: Tissue samples were obtained intraoperatively from 25 patients with pituitary adenoma...
April 21, 2017: Pituitary
https://www.readbyqxmd.com/read/28430293/three-cases-of-ectopic-sphenoid-sinus-pituitary-adenoma
#3
Ernest Jan Bobeff, Karol Wiśniewski, Wielisław Papierz, Ludomir Stefańczyk, Dariusz Jan Jaskólski
<i><b>Introduction</b>: Ectopic sphenoid sinus pituitary adenoma is a rare tumour originating from embryologic remnants of Rathke's pouch. Although it is considered a clinically benign neoplasm, necrosis is encountered in 25% of cases and it can invade adjacent bone structures. <b>Aims</b>: To establish clinical, radiological and histopathological features of ectopic sphenoid sinus pituitary adenoma. <b>Material and methods: </b> Analysis of three cases: two females and one man, aged 61-70...
2017: Folia Neuropathologica
https://www.readbyqxmd.com/read/28427982/preoperative-evaluation-of-sellar-and-parasellar-macro-lesions-by-fluorine-18-fluorodeoxyglucose-positron-emission-tomography
#4
Masahiko Tosaka, Tetsuya Higuchi, Keishi Horiguchi, Tadashi Osawa, Yukiko Arisaka, Haruyasu Fujita, Yoshito Tsushima, Yuhei Yoshimoto
OBJECTIVE: Various pathologies can occur in the sellar and suprasellar regions. The potential of fluorine-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) for the preoperative evaluation of sellar and parasellar lesions was investigated. METHODS: A total of 49 patients aged 8 to 82 years with sellar and parasellar macroscopic lesions (≥10 mm) underwent FDG PET. Twenty-two patients had pituitary adenomas, including 14 non-functioning and 8 growth hormone (GH)-secreting adenomas...
April 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28427099/role-of-phosphodiesterases-on-the-function-of-aryl-hydrocarbon-receptor-interacting-protein-aip-in-the-pituitary-gland-and-on-the-evaluation-of-aip-gene-variants
#5
Laura C Hernández-Ramírez, Giampaolo Trivellin, Constantine A Stratakis
Familial isolated pituitary adenoma (FIPA) is caused in about 20% of cases by loss-of-function germline mutations in the AIP gene. Patients harboring AIP mutations usually present with somatotropinomas resulting either in gigantism or young-onset acromegaly. AIP encodes for a co-chaperone protein endowed with tumor suppressor properties in somatotroph cells. Among other mechanisms proposed to explain this function, a regulatory effect over the 3',5'-cyclic adenosine monophosphate (cAMP) signaling pathway seems to play a prominent role...
April 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28423663/a-novel-total-pituitary-hormone-index-as-an-indicator-of-postoperative-pituitary-function-in-patients-undergoing-resection-of-pituitary-adenomas
#6
Shousen Wang, Biao Li, Chenyu Ding, Deyong Xiao, Liangfeng Wei
The purpose of this study was to investigate the differences between pre- and postoperative pituitary hormone levels in patients undergoing surgical resection of pituitary adenoma and to identify factors associated with preoperative hypopituitarism.Data from 81 patients with histologically confirmed functioning and non-functioning pituitary adenomas (NFPA) who underwent transsphenoidal resection from January 2011 to December 2013 were retrospectively analyzed. Logistic regression was applied to analyze factors associated with preoperative hypopituitarism...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28421421/sphenoid-sinus-mucosal-thickening-in-the-acute-phase-of-pituitary-apoplexy
#7
Mueez Waqar, Robert McCreary, Tara Kearney, Konstantina Karabatsou, Kanna K Gnanalingham
PURPOSE: In pituitary apoplexy (PA), there are preliminary reports on the appearance of sphenoid sinus mucosal thickening (SSMT). SSMT is otherwise uncommon with an incidence of up to 7% in asymptomatic individuals. The aim of this study was to evaluate the incidence and clinical significance of SSMT in patients with PA and a control group of surgically treated non-functioning pituitary adenomas (NFPAs). METHODS: Retrospective review of clinical and imaging variables in PA and NFPA patients...
April 18, 2017: Pituitary
https://www.readbyqxmd.com/read/28420444/case-report-acth-secreting-pituitary-carcinoma-metastatic-to-the-liver-in-a-patient-with-a-history-of-atypical-pituitary-adenoma-and-cushing-s-disease
#8
Amy S Joehlin-Price, Douglas A Hardesty, Christina A Arnold, Lawrence S Kirschner, Daniel M Prevedello, Norman L Lehman
BACKGROUND: Pituitary carcinoma is a rare entity requiring the presence of metastasis to confirm its malignant potential. We report a case of pituitary carcinoma and discuss the diagnosis and management of this lesion in relation to the existing literature. CASE PRESENTATION: The patient is a 51-year-old woman with Cushing's disease and intact adrenal glands who was diagnosed with metastatic pituitary carcinoma to the liver, 29 months after initial resection of an ACTH-secreting primary atypical pituitary adenoma (APA)...
April 18, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28418929/plurihormonal-cells-of-normal-anterior-pituitary-facts-and-conclusions
#9
Lubov B Mitrofanova, Petr V Konovalov, Julia S Krylova, Victoria O Polyakova, Igor M Kvetnoy
INTRODUCTION: plurihormonality of pituitary adenomas is an ability of adenoma cells to produce more than one hormone. After the immunohistochemical analysis had become a routine part of the morphological study, a great number of adenomas appeared to be multihormonal in actual practice. We hypothesize that the same cells of a normal pituitary gland releases several hormones simultaneously. OBJECTIVE: To analyse a possible co-expression of hormones by the cells of the normal anterior pituitary of adult humans in autopsy material...
March 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28413523/predictors-of-visual-outcome-with-transsphenoidal-excision-of-pituitary-adenomas-having-suprasellar-extension-a-prospective-series-of-100-cases-and-brief-review-of-the-literature
#10
Amit Kumar Thotakura, Mohana Rao Patibandla, Manas K Panigrahi, Gokul Chowdary Addagada
OBJECTIVE: The aim was to assess the factors influencing the visual outcome following trans-sphenoidal excision of pituitary adenomas. MATERIALS AND METHODS: One hundred consecutive patients of pituitary adenomas with suprasellar extension (SSE) were operated by trans-sphenoidal approach from July 2003 to December 2006. There were 52 male and 48 female patients with a mean age of 42.47 years. The visual impairment score, which was used to evaluate the visual outcome was produced by adding the scores for visual acuity and visual field defects of each patient (from the tables of the German Ophthalmological Society)...
January 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28413388/a-case-report-of-cushing-s-disease-presenting-as-hair-loss
#11
Emily G Lefkowitz, Jack P Cossman, John B Fournier
Cushing's syndrome is a rare endocrine disorder that comprises a large group of signs and symptoms resulting from chronic exposure to excess corticosteroids. Most cases of Cushing's syndrome are due to increased adrenocorticotropic hormone production from a pituitary adenoma, which is referred to as Cushing's disease. Most of the signs and symptoms are nonspecific and common in the general population, making a diagnosis often challenging. However, several dermatological manifestations, such as fragile skin, easy bruising, and reddish purple striae, are more discriminatory...
January 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/28413019/germline-mutations-in-cdh23-encoding-cadherin-related-23-are-associated-with-both-familial-and-sporadic-pituitary-adenomas
#12
Qilin Zhang, Cheng Peng, Jianping Song, Yichao Zhang, Jianhua Chen, Zhijian Song, Xuefei Shou, Zengyi Ma, Hong Peng, Xuemin Jian, Wenqiang He, Zhao Ye, Zhiqiang Li, Yongfei Wang, Hongying Ye, Zhaoyun Zhang, Ming Shen, Feng Tang, Hong Chen, Zhifeng Shi, Chunjui Chen, Zhengyuan Chen, Yue Shen, Ye Wang, Shaoyong Lu, Jian Zhang, Yiming Li, Shiqi Li, Ying Mao, Liangfu Zhou, Hai Yan, Yongyong Shi, Chuanxin Huang, Yao Zhao
Pituitary adenoma (PA) is one of the most common intracranial neoplasms. Several genetic predisposing factors for PA have been identified, but they account for a small portion of cases. In this study, we sought to identify the PA genetic risk factors by focusing on causative mutations for PAs. Among the 4 affected and 17 asymptomatic members from one family with familial PA, whole-exome sequencing identified cosegregation of the PA phenotype with the heterozygous missense mutation c.4136G>T (p.Arg1379Leu) in cadherin-related 23 (CDH23)...
April 8, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28412706/endocrine-comorbidities-in-patients-with-psoriatic-arthritis-a-population-based-case-controlled-study
#13
Amir Haddad, Ron Ilan Ashkenazi, Haim Bitterman, Ilan Feldhamer, Sari Greenberg-Dotan, Idit Lavi, Erez Batat, Irina Bergman, Arnon Dov Cohen, Devy Zisman
OBJECTIVE: To investigate endocrine comorbidities in patients with psoriatic arthritis (PsA). METHODS: A retrospective, cross-sectional study was performed with the database of Clalit Health Services, the largest healthcare provider in Israel, between 2002 and 2014. Patients with PsA were identified and matched by age and sex to healthy controls. The following morbidities were analyzed: hypo/hyperthyroidism, hypo/hyperparathyroidism, hyperprolactinemia, Cushing disease, Addison disease, diabetes insipidus, diabetes mellitus (DM), pituitary adenoma, acromegaly, and osteoporosis...
April 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28411401/expression-of-stem-cell-markers-and-dopamine-d2-receptors-in-human-and-rat-prolactinomas
#14
Zhichao Gao, Lin Cai, Jianglong Lu, Chengde Wang, Qun Li, Jian Chen, Xiaoxiao Song, Xianbin Chen, Linlin Zhang, Weiming Zheng, Zhipeng Su
BACKGROUND Dopamine agonists (DAs) are the first-line treatment for prolactinomas. DAs primarily target the dopamine D2 receptor (D2R). Tumor stem-like cells (TSLCs) are associated with the tolerance to radiotherapy and chemotherapy. TSLCs have also been identified in pituitary adenomas. We aimed to characterize the expression pattern of stem cell markers and D2R in human and rat prolactinomas. MATERIAL AND METHODS Human prolactinoma specimens (n=14) were obtained from patients with surgical resection. The xenograft model of rat prolactinomas was generated by endermically injecting MMQ cells, HE and PRL were confirmed by immunohistochemical staining of tumor sections, and the expression of serum PRL was measured by ELISA...
April 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28407138/calcium-and-bone-turnover-markers-in-acromegaly-a-prospective-controlled-study
#15
Tina Constantin, Vin Tangpricha, Reshma Shah, Nelson M Oyesiku, Octavian C Ioachimescu, James Ritchie, Adriana G Ioachimescu
Context: Acromegaly has been associated with calcium-phosphate and bone turnover alterations. Controlled studies of these interactions are sparse. Objective: To evaluate calcium and bone metabolism in active and treated acromegaly. Design/Setting/Patients: We conducted a controlled prospective study at a tertiary referral center. We studied 22 patients with acromegaly referred for surgical or medical therapy (ACM) and 22 with nonfunctioning pituitary adenomas referred for surgery (control)...
April 12, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28400550/primary-pituitary-tuberculosis-revisited
#16
Fatma Ben Abid, Mohammed Abukhattab, Hanfa Karim, Mohamed Agab, Issam Al-Bozom, Wanis H Ibrahim
BACKGROUND Primary pituitary tuberculosis (in absence of other organ involvement and constitutional symptoms) is an extremely rare disease with total reported cases in the literature fewer than a hundred. Misdiagnosis as pituitary adenoma is common and late diagnosis can result in a permanent endocrine dysfunction and/or long-term neurologic sequelae. CASE REPORT We report on the case of a middle-aged woman who presented with severe headache and left third cranial nerve palsy. Magnetic resonance imaging (MRI) revealed a large pituitary tumor invading the left cavernous sinus...
April 12, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28399532/metastatic-pituitary-carcinoma-to-cervical-lymph-node-diagnosis-by-fine-needle-aspiration-and-review-of-the-literature
#17
Huiying Wang, Jiancong Liang, William H Yong, Peggy Sullivan
BACKGROUND: Pituitary carcinomas are rare neoplasms whose designation requires demonstration of metastatic disease. No specific morphologic features can reliably distinguish pituitary carcinomas from pituitary adenomas, rendering the diagnosis particularly challenging. Furthermore, as reports of pituitary carcinoma on fine needle aspiration (FNA) biopsy are exceedingly rare in the literature, the cytological features of pituitary carcinoma are poorly characterized. CASE REPORT: Here we describe a case of pituitary carcinoma in a 67-year-old woman with history of recurrent adrenocorticotropic hormone (ACTH)-producing pituitary adenoma who presented with a persistent left cervical nodule for 2 years...
April 12, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28397723/short-term-preoperative-octreotide-for-thyrotropin-secreting-pituitary-adenoma
#18
Hong-Juan Fang, Yu Fu, Huan-Wen Wu, Yi-Lin Sun, Yang-Fang Li, Ya-Zhuo Zhang, Li-Yong Zhong
BACKGROUND: Thyrotropin-secreting pituitary adenomas (TSHomas) are a rare cause of hyperthyroidism. Somatostatin (SST) analogs work by interacting with somatostatin receptors (SSTRs). This study aimed to evaluate short-term preoperative octreotide (OCT) use in TSHoma patients and to investigate SSTR2 and SSTR5 expression and observe structural changes in tumor tissue. METHODS: We reviewed records and samples from eight TSHoma patients treated between July 2012 and July 2015...
April 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28396686/expression-of-somatostatin-receptor-2-in-somatotropinoma-correlated-with-the-short-term-efficacy-of-somatostatin-analogues
#19
Wenjuan Liu, Lina Xie, Min He, Ming Shen, Jingjing Zhu, Yeping Yang, Meng Wang, Ji Hu, Hongying Ye, Yiming Li, Yao Zhao, Zhaoyun Zhang
The expression of somatostatin receptor subtypes (SSTRs) in pituitary growth hormone- (GH-) secreting adenomas may predict the response to somatostatin analogues (SSA). Our aim was to evaluate the value of the immunohistochemical (IHC) scores of 2 subtypes, SSTR2 and SSTR5, in predicting the short-term efficacy of SSA therapy in patients with active acromegaly. Ninety-three newly diagnosed acromegalic patients were included in our study. These patients were categorized into either a SSA-pretreated group (SA, n = 63) or a direct-surgery group (DS, n = 30), depending on whether or not presurgical SSA treatment was received...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28391254/primary-pigmented-nodular-adrenocortical-disease-literature-review-and-case-report-of-a-6-year-old-boy
#20
Dragan Katanić, Dejan Kafka, Mirjana Živojinov, Jovan Vlaški, Zorana Budakov, Marija Knežević Pogančev, Ivana Vorgučin, Tomislav Ćuk
Cushing's syndrome is rare in childhood and is usually caused by a pituitary adenoma. Primary hyperfunction of adrenal glands is less frequent, particularly primary pigmented nodular adrenocortical disease (PPNAD). It occurs usually in children and adolescents, with female preponderance, while Cushing's disease has increased frequency in prepubertal males. A case of a 6-year-old boy is presented with isolated non-familiar PPNAD. The clinical pattern involved Cushingoid appearance, hypertension, virilization and depressive mood...
April 10, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
keyword
keyword
6582
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"